I only use it in my E82 to do basic things like 'stop guidance', 'messages', 'last destinations', 'phonebook'. It would be better if you could enter a postcode straight away, not just the 'one shot' full address; and it often doesn't hear you properly, and does seem archaic compared to e.g. Siri.
It's handy sometimes when you're e.g. Driving in an unfamiliar city and need to keep your eyes on the road; but much of the time I've found it's quicker to use the iDrive controller!
F30 330d M Sport Mineral Grey / Coral Red
Pro Nav/Visibility Pack/Comfort Pack/Harman Kardon/Head-Up Display/Electric Seats/Comfort Access/Adaptive Suspension...